<template>
  <div class="todo-container">
    <div class="todo-wrap">
      <Header :addTodoHandle="addTodoHandle" />
      <List
        :todoList="todoList"
        :singleCheckedHandle="singleCheckedHandle"
        :singleDeleteHandle="singleDeleteHandle"
      />
      <Footer
        :todoList="todoList"
        :allCheckedHandle="allCheckedHandle"
        :allDeleteHandle="allDeleteHandle"
      />
    </div>
  </div>
</template>

<script>
import { v4 as uuidv4 } from "uuid";
import Header from "./components/Header";
import List from "./components/List";
import Footer from "./components/Footer";

export default {
  name: "App",
  data() {
    return {
      todoList: [
        {
          id: uuidv4(),
          skill: "唱",
          done: false,
        },
        {
          id: uuidv4(),
          skill: "跳",
          done: false,
        },
        {
          id: uuidv4(),
          skill: "rap",
          done: false,
        },
      ],
    };
  },
  components: {
    Header,
    List,
    Footer,
  },
  methods: {
    //添加
    addTodoHandle(e) {
      if (!e.target.value) return alert("输入不能为空");
      this.todoList.unshift({
        id: uuidv4(),
        skill: e.target.value.trim(),
        done: false,
      });
      e.target.value = "";
    },
    //单选
    singleCheckedHandle(id) {
      this.todoList = this.todoList.map((item) =>
        item.id === id ? { ...item, done: !item.done } : item
      );
    },
    //单删
    singleDeleteHandle(id) {
      this.todoList = this.todoList.filter((item) => item.id !== id);
    },
    //多选
    allCheckedHandle(value) {
      this.todoList = this.todoList.map((item) => ({ ...item, done: value }));
    },
    //批量删除
    allDeleteHandle() {
      this.todoList = this.todoList.filter((item) => !item.done);
    },
  },

  mounted() {
    this.todoList = JSON.parse(localStorage.getItem("todoList") || "[]");
  },
  watch: {
    todoList: {
      deep: true,
      handler() {
        localStorage.setItem("todoList", JSON.stringify(this.todoList));
      },
    },
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>